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September Weather in Santa Rosa, Peru

Last updated: August 27, 2025

In September, the average temperature in Santa Rosa, Peru hovers around 19°C (66°F). Visitors can expect a minimum of 12°C (54°F) and a maximum of 27°C (82°F), making it an enjoyable time of year. However, be prepared for some rain, as the area typically receives 127 mm (5.0 in) of precipitation over 22 days. With an average humidity of 40%, the climate remains comfortable, perfect for outdoor adventures!

September Temperature in Santa Rosa

In September in Santa Rosa, the average temperature is 19°C (66°F). Maximums can reach 27°C (82°F), while minimums can drop as low as 12°C (54°F). This pleasant climate makes it an ideal time to explore the local attractions and enjoy outdoor activities.

September Weather in Santa Rosa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Rosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Rosa, September typically has an average temperature of 19°C (66°F), with highs reaching up to 27°C (82°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec666666666565646466666767
Data source: Temperature data for Santa Rosa generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Santa Rosa

In Santa Rosa in September, the precipitation amount is 127 mm (5.0 in) over the course of 22 days.

September Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Santa Rosa, September typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec4534713692761461148888128214333412
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Rosa

In Santa Rosa in September, humidity is 40%. With an average temperature of 19°C (66°F), this humidity feels like a refreshing breeze, making it perfect for exploring the sights without feeling overheated.

September Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Santa Rosa is approximately 40%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%91%89%85%65%47%38%40%56%76%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Rosa

In Santa Rosa in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Santa Rosa, you can check here.

Maximum UV Index Levels in Santa Rosa for September

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Santa Rosa typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec171717161311111314161716
Data source: Santa Rosa September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Santa Rosa Compares to Other Months

Weather in Santa Rosa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Rosa, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Santa Rosa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (66°F)453 mm (17.8 inches)91%extreme
February Weather19°C (66°F)471 mm (18.5 inches)90%extreme
March Weather19°C (66°F)369 mm (14.5 inches)91%extreme
April Weather19°C (66°F)276 mm (10.9 inches)89%extreme
May Weather18°C (65°F)146 mm (5.7 inches)85%extreme
June Weather18°C (65°F)114 mm (4.5 inches)65%extreme
July Weather18°C (64°F)88 mm (3.5 inches)47%extreme
August Weather18°C (64°F)88 mm (3.5 inches)38%extreme
September Weather19°C (66°F)127 mm (5.0 inches)40%extreme
October Weather19°C (67°F)213 mm (8.4 inches)56%extreme
November Weather19°C (67°F)333 mm (13.1 inches)76%extreme
December Weather19°C (67°F)412 mm (16.2 inches)90%extreme

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